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The Appointment icon from the home navigation displays a notification number that indicates the count of new appointments after syncing your device. The notifications remain until you select Dismiss New Appointments located at the top of the Appointments List (by selecting Appointments from the home navigation or from the Service Call form > Appointments tab) or if you sync the device again. If you dismiss the notifications of the new appointments from the service call form, only the notifications for the new appointments related to the service call are dismissed.
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